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(No Model.)

H. W. WILSON. STOVBPIPB DAMPER.

Patented Oct. 16,1894.

Uixuri-:Dv STATES;

PATENT OFFIGl-vv HOUGHTON W. WILSON; OF KINGSTON, CANADA.

`s'r'ovEPlP'E-DAMPER.

SPECIFICATION forming' part of Letters Patent No. 527,573, dated October 16, 1894. Application file April 2, 1894:. Serial No. 506,081. (No model.) Patentetl in Canada April 8, 1893, No. 42.612.

To all whom it may concern: i

Be it known that I, HoUGHToN W. WILSON, of Kingston, in the county of Frontenac and Province of Ontario, Dominion of Canada, have invented certain new and useful Improvements in Stovepipe-Dampers, (for which I have obtained patent of the Dominion of Canada, No. 42,512, dated April 8, 1893;) and I do hereby declare that the following is a full, clear, and exact description of the same, reference being had to the accompanying drawings, forming apart hereof. i

My invention, which will be hereinafter fully set forth and claimed, relates to dalnpers for stove pipes, smoke stacks and the like.

The object of my invention is a damper for stove pipes, smoke stacks and the like, that will defiect the hot gases and other products of combustion against the interior surface of the stove pipe or flue and thus, while controlling the draft, will also utilize the .heat more effectively and economize fuel.

Figure 1 is a Vertical transverse section of my improved damper, shown in position'in a stove pipe, open, the dotted line showing it closed. Fig. 2 is an elevation of the same,

, taken at a right angle to Flig. l.

A ring, A A' fitting the interior of the stove pipe, P, freely, projects inwardly so as to contract the area of the pipe and is provided with two lugs, a, opposite each other,'each having an eye through which the damper axle passes, by which it is supported in the pipe or flue and which rotates in it. The

lower surface of said ring is preferably bev-v eled upward and inward, so as to make an angle with the pipe orlfiue and form a conical contraction of the same. The upper part, A', which may be made in a separate piece for convenience of manufacture, is beveled the reverse Way, to prevent the formation of aV flat shelf or pocket upon which soot might accumulate. A bail B, having its ends secured to opposite sides transversely to and midway between the two lugs a of said ring-=- preferably to the lower part if made in two halvesfi-and the upper portion of its sides bent out to the diameter of the stove pipe, so as Vto afford the ring a lateral support, carries on its transverse upper portion, and some distance above said. ring,a deflector, 0, having its lower surface .curved or beveled off from the center upwardly into conical shape and being of a less diameter than the central opening or throat in the ring A A'. D is the axle which passes transversely through the pipe and the lugs a, supporting the latter with the ringin the pipe, and capable of t-urning in them both. Its central portion is curved, so as to form a crank. d, to which an upwardly andoutwardly deflecting conical or segmental disk E, somewhat smaller than the opening or throat in the ring A A', is attached, which forms the valve or damp'er proper. The curve forming the crank dfis a gradual one, so thatit can be passed through the holes or eyes in the pipe and lugs, but may be substituted by a straight aXle with an arm secured to it at a right angl'e, and the throw of the crank or arm is made equal to the distance of the axle from the upper edge of the bottom ring Aor the throat of the whole ring A A'. A key or handle, d', is provided atone end of the axle by which the latter may be turned. It is weighted to balance the disk E and crank d.

When the axle is turned down, as shown in the drawings, the gases and other products of combustion strike the deflecting surface of the disk E, directing the current outwardly against the oblique surface of the ring A. This again directs it toward the center of the pipe, where, higher up, it strikes the deflector C, which again ,directs the current outwardly. The current is thus well broken up and directed outward toward the heating surface of the pipe. When the axle D is turned up, as shown in Fig. 1 in dotted lines, the disk E stops up the opening or throat of the ring A, just sufticient space being left to prevent an airtight joint and 'still allowing a small portion of 'the gases .to pass.

I claim as my iuventionfl- In a stove and smoke pipe damper, the combination of a stationary ring contracting the passageway of the pipe, provided'with two lugs on its lower edge and having its lower surface beveled upwardly andinwardly to form a deliecting face and its upper surface beveled outwardly and upwardly to prevent the formation of a pocket or shelf, a deflector some distance above and smaller than the th roat of the ring above recited, a bail secured to said ring transversely to the lugs and IOO holding said defieetor' on a Wide spreading top, an axle Curved to form a Crank in the center passing through and having its ends bear and rotate in the stove pipe onflue and the lugs of the ring which latter it supports and being provided with balanced handle at one end and a deflecting disk somewhat smaller than the throat of the ring secul'ed to the Crank of said axle, substantially as set forth. Io

In testimony whereof I have signed in the presence of the undersigned witnesses.

I-IOUGI-ITON W. WILSON. Witnesses:

O. H. OTTO, W. L. RIQHARDSON. 

